SINFONI Observations of the Circinus Galaxy

The Circinus galaxy - one of the nearest galaxies with an active centre (AGN) - was observed in the K-band (wavelength 2 µm) using the nucleus to guide the SINFONI AO Module. The seeing was 0.5 arcsec and the width of each slitlet 0.025 arcsec; the total integration time on the galaxy was 40 min. At the top is a K-band image of the central arcsec of the galaxy (left insert) and a K-band spectrum of the nucleus (right). In the lower half are images (left) in the light of ionised hydrogen (the Brackett-gamma line) and molecular hydrogen lines (H2), together with their combined rotation curve (middle), as well as images of the broad and narrow components of the high excitation [Ca VIII] spectral line (right). The false-colours in the images represent regions of different surface brightness.

Credit:

ESO

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About the Image

Id:eso0426l
Type:Observation
Release date:24 August 2004
Related releases:eso0426
Size:793 x 620 px

About the Object

Name:Circinus Galaxy, Spectrum
Type:• Local Universe : Galaxy : Type : Spiral
• X - Galaxies
Distance:13 million light years

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Colours & filters

BandWavelengthTelescope
Infrared
K
2.0 μm Very Large Telescope
SINFONI

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